(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"diff hunk fusing">)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (FuncDef
      name: f
      body: 
        (BraceGroup
          children: [
            (C {(echo)} {($ VSub_Number "$1")})
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:i) op:Equal rhs:{(1)} spids:[27])]
              spids: [27]
            )
            (While
              cond: [(C {(test)} {($ VSub_Name "$i")} {(-le)} {($ VSub_Number "$2")})]
              body: 
                (DoGroup
                  children: [
                    (C {(echo)} {($ VSub_Name "$i")})
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:i)
                          op: Equal
                          rhs: 
                            {
                              (CommandSubPart
                                command_list: 
                                  (CommandList
                                    children: [
                                      (C {(expr)} {($ VSub_Name "$i")} {(Lit_Other "+")} {(1)})
                                    ]
                                  )
                                left_token: <Left_CommandSub "$(">
                                spids: [51 59]
                              )
                            }
                          spids: [50]
                        )
                      ]
                      spids: [50]
                    )
                  ]
                  spids: [42 62]
                )
            )
            (C {(echo)} {($ VSub_Number "$3")})
          ]
          spids: [19]
        )
      spids: [15 18]
    )
    (FuncDef
      name: t
      body: 
        (BraceGroup
          children: [
            (Case
              to_match: {($ VSub_Pound "$#")}
              arms: [
                (case_arm
                  pat_list: [{(4)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:hunks)
                              op: Equal
                              rhs: {($ VSub_Number "$4")}
                              spids: [89]
                            )
                          ]
                          spids: [89]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:cmd)
                          op: Equal
                          rhs: {(DQ ("diff -U") ($ VSub_Number "$3"))}
                          spids: [93]
                        )
                      ]
                      spids: [93]
                    )
                  ]
                  spids: [86 87 98 -1]
                )
                (case_arm
                  pat_list: [{(5)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:hunks)
                              op: Equal
                              rhs: {($ VSub_Number "$5")}
                              spids: [104]
                            )
                          ]
                          spids: [104]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:cmd)
                          op: Equal
                          rhs: 
                            {
                              (DQ ("diff -U") ($ VSub_Number "$3") (" --inter-hunk-context=") 
                                ($ VSub_Number "$4")
                              )
                            }
                          spids: [108]
                        )
                      ]
                      spids: [108]
                    )
                  ]
                  spids: [101 102 115 -1]
                )
              ]
              spids: [79 83 118]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:label)
                  op: Equal
                  rhs: 
                    {
                      (DQ ($ VSub_Name "$cmd") (", ") ($ VSub_Number "$1") (" common ") 
                        ($ VSub_Number "$2")
                      )
                    }
                  spids: [121]
                )
              ]
              spids: [121]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:file)
                  op: Equal
                  rhs: {(f) ($ VSub_Number "$1")}
                  spids: [131]
                )
              ]
              spids: [131]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:expected)
                  op: Equal
                  rhs: 
                    {(expected.) ($ VSub_Name "$file") (.) ($ VSub_Number "$3") (.) 
                      ($ VSub_Name "$hunks")
                    }
                  spids: [136]
                )
              ]
              spids: [136]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Pipeline
                      children: [(C {(test)} {(-f)} {($ VSub_Name "$file")})]
                      negated: True
                    )
                  ]
                  action: [
                    (SimpleCommand
                      words: [{(f)} {(A)} {($ VSub_Number "$1")} {(B)}]
                      redirects: [
                        (Redir
                          op_id: Redir_Great
                          fd: -1
                          arg_word: {($ VSub_Name "$file")}
                          spids: [168]
                        )
                      ]
                    )
                    (C {(git)} {(add)} {($ VSub_Name "$file")})
                    (C {(git)} {(commit)} {(-q)} {(-m.)} {($ VSub_Name "$file")})
                    (SimpleCommand
                      words: [{(f)} {(X)} {($ VSub_Number "$1")} {(Y)}]
                      redirects: [
                        (Redir
                          op_id: Redir_Great
                          fd: -1
                          arg_word: {($ VSub_Name "$file")}
                          spids: [198]
                        )
                      ]
                    )
                  ]
                  spids: [-1 157]
                )
              ]
              spids: [-1 202]
            )
            (C {(test_expect_success)} 
              {(DQ ($ VSub_Name "$label") (": count hunks (") ($ VSub_Name "$hunks") (")"))} 
              {
                (DQ ("\n") ("\t\ttest ") 
                  (CommandSubPart
                    command_list: 
                      (CommandList
                        children: [
                          (Pipeline
                            children: [
                              (C {(git)} {($ VSub_Name "$cmd")} {($ VSub_Name "$file")})
                              (C {(grep)} {(SQ <"^@@ ">)})
                              (C {(wc)} {(-l)})
                            ]
                            negated: False
                          )
                        ]
                      )
                    left_token: <Left_CommandSub "$(">
                    spids: [218 238]
                  ) (" = ") ($ VSub_Name "$hunks") ("\n") ("\t")
                )
              }
            )
            (AndOr
              children: [
                (C {(test)} {(-f)} {($ VSub_Name "$expected")})
                (C {(test_expect_success)} {(DQ ($ VSub_Name "$label") (": check output"))} 
                  {
                    (DQ ("\n") ("\t\tgit ") ($ VSub_Name "$cmd") (" ") ($ VSub_Name "$file") 
                      (" | grep -v '^index ' >actual &&\n") ("\t\ttest_cmp ") ($ VSub_Name "$expected") (" actual\n") ("\t")
                    )
                  }
                )
              ]
              op_id: Op_DAmp
            )
          ]
          spids: [76]
        )
      spids: [72 75]
    )
    (AndOr
      children: [
        (SimpleCommand
          words: [{(cat)}]
          redirects: [
            (HereDoc
              op_id: Redir_DLess
              fd: -1
              body: 
                {
                  (DQ ("diff --git a/f1 b/f1\n") ("--- a/f1\n") ("+++ b/f1\n") ("@@ -1,3 +1,3 @@\n") 
                    ("-A\n") ("+X\n") (" 1\n") ("-B\n") ("+Y\n")
                  )
                }
              do_expansion: True
              here_end: EOF
              was_filled: True
              spids: [281]
            )
            (Redir op_id:Redir_Great fd:-1 arg_word:{(expected.f1.0.1)} spids:[284])
          ]
        )
        (C {(exit)} {(1)})
      ]
      op_id: Op_DPipe
    )
    (AndOr
      children: [
        (SimpleCommand
          words: [{(cat)}]
          redirects: [
            (HereDoc
              op_id: Redir_DLess
              fd: -1
              body: 
                {
                  (DQ ("diff --git a/f1 b/f1\n") ("--- a/f1\n") ("+++ b/f1\n") ("@@ -1 +1 @@\n") ("-A\n") 
                    ("+X\n") ("@@ -3 +3 @@ A\n") ("-B\n") ("+Y\n")
                  )
                }
              do_expansion: True
              here_end: EOF
              was_filled: True
              spids: [305]
            )
            (Redir op_id:Redir_Great fd:-1 arg_word:{(expected.f1.0.2)} spids:[308])
          ]
        )
        (C {(exit)} {(1)})
      ]
      op_id: Op_DPipe
    )
    (C {(t)} {(1)} {(line)} {(0)} {(2)})
    (C {(t)} {(1)} {(line)} {(0)} {(0)} {(2)})
    (C {(t)} {(1)} {(line)} {(0)} {(1)} {(1)})
    (C {(t)} {(1)} {(line)} {(0)} {(2)} {(1)})
    (C {(t)} {(1)} {(line)} {(1)} {(1)})
    (C {(t)} {(2)} {(lines)} {(0)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(0)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(1)} {(2)})
    (C {(t)} {(2)} {(lines)} {(0)} {(2)} {(1)})
    (C {(t)} {(2)} {(lines)} {(1)} {(1)})
    (C {(t)} {(3)} {(lines)} {(1)} {(2)})
    (C {(t)} {(3)} {(lines)} {(1)} {(0)} {(2)})
    (C {(t)} {(3)} {(lines)} {(1)} {(1)} {(1)})
    (C {(t)} {(3)} {(lines)} {(1)} {(2)} {(1)})
    (C {(t)} {(9)} {(lines)} {(3)} {(2)})
    (C {(t)} {(9)} {(lines)} {(3)} {(2)} {(2)})
    (C {(t)} {(9)} {(lines)} {(3)} {(3)} {(1)})
    (C {(test_done)})
  ]
)